Method and System for Connecting Between Terminals in Multimedia Communication

1. A terminal connection method of an internal application server (iAS) implemented using a computer apparatus comprising at least one processor, the method comprising: receiving, by the at least one processor, first information about relations between one or more nodes and a plurality of front end servers, the plurality of front end servers including a first front end server and a second front end server, and storing, by the at least one processor, the first information in a database; receiving, by the at least one processor, a message requesting a connection between a first node and a second node of the one or more nodes from an external application server (xAS) desiring to connect the first node and the second node; searching, by the at least one processor, the database for the first front end server having a relation with the first node and the second front end server having a relation with the second node; and transmitting, by the at least one processor, a first request for the connection between the first node and the second node to at least one of the first front end server and the second front end server, the first request requesting bridging between the first front end server and the second front end server.

2. The method of claim 1 , further comprising: setting up, by the at least one processor, an access session between the first front end server and the second front end server in response to a second request from the first front end server to the second front end server or from the second front end server to the first front end server for access session connection.

3. The method of claim 2 , further comprising: performing, by the at least one processor, communication between the first node and the second node through the access session set up between the first front end server and the second front end server.

4. The method of claim 1 , further comprising: in response to a third request from a specific node of the one or more nodes desiring a service to a specific front end server of the plurality of front end servers for access session connection, setting up, by the at least one processor, an access session between the specific node and the specific front end server, and storing, by the at least one processor, second information about a relation between the specific node and the specific front end server.

5. A terminal connection method of a first front end server implemented using a computer apparatus comprising at least one processor, the method comprising: receiving by the at least one processor, a first request for access session connection from a first node having a relation with the first front end server; setting up, by the at least one processor, a first access session with the first node in response to the first request for access session connection; transmitting, by the at least one processor, first information about a relation between the first front end server and the first node to an internal application server (iAS); receiving, by the at least one processor, a node connection request from the internal application server for connection between the first node and a second node having a relation with a second front end server; transmitting, by the at least one processor, a second request for access session connection to the second front end server to set up a second access session with the second front end server in response to the received node connection request; and supporting, by the at least one processor, communication between the first node and the second node using the second access session.

6. The method of claim 5 , further comprising: receiving, by the at least one processor, a third request for connections between the first node and the second node to at least one of the first front end server or the second front end server based on a search result of searching a database in response to a message requesting a connection between the first node and the second node from an external application server (xAS) desiring to connect the first node and the second node, the database associated with the internal application server and configured to store the first information.

7. The method of claim 5 , further comprising: connecting, by the at least one processor, a third access session with a third front end server in response to receiving a request from the third front end server having a relation with a third node for access session connection; and supporting, by the at least one processor, communication between the first node and the third node using the third access session.

8. A non-transitory computer-readable storage medium storing instructions that, when executed by at least one processor, cause the at least one processor to perform the method of claim 1 .

9. A computer apparatus comprising: at least one processor configured to execute a computer-readable instruction, wherein the at least one processor is configured to, receive first information about relations between one or more nodes and a plurality of front end servers and store the first information in a database, the plurality of front end servers including a first front end server and a second front end server, receive a message requesting a connection between a first node and a second node of the one or more nodes from an external application server (xAS) desiring to connect the first node and the second node, search the database for the first front end server having a relation with the first node and the second front end server having a relation with the second node, and transmit a first request for the connection between the first node and the second node to at least one of the first front end server and the second front end server, the first request requesting bridging between the first front end server and the second front end server.

10. The computer apparatus of claim 9 , wherein the at least one processor is configured to set up an access session between the first front end server and the second front end server in response to a second request from the first front end server to the second front end server or from the second front end server to the first front end server for access session connection.

11. A first front end server implemented using a computer apparatus comprising at least one processor, the first front end server comprising: the at least one processor configured to execute a computer-readable instruction, wherein the at least one processor is configured to, receive a first request for access session connection from a first node, set up a first access session with the first node in response to the first request for access session connection, transmit first information about a relation between the first front end server and the first node to an internal application server (iAS), receive a node connection request from the internal application server for connection between the first node and a second node having a relation with a second front end server, transmit a second request for access session connection to the second front end server to set up a second access session with the second front end server in response to the received node connection request, and support communication between the first node and the second node using the second access session.

12. The first front end server of claim 11 , wherein the at least one processor is further configured to receive a third request for connections between the first node and the second node to at least one of the first front end server or the second front end server based on a search result of searching a database in response to a message requesting a connection between the first node and the second node from an external application server (xAS) desiring to connect the first node and the second node, the database associated with the internal application server and configured to store the first information.